200 mph
Well i was assuming he has HPT or some other tuner, most people,...... well the smarter bunch ... do
Mass makes a difference to acceleration but not to
ultimate speed. Going to dmaller diameter converters
generally means you give up clutch capability (area).
Many, many performance converters have lockup
clutches that are not capable of holding at WOT.
If you're serious then you need to go for a brute
of a lockup clutch, either multi-disc or a high
area one. Mine's done OK with WOT lockup (even
pulls in at WOT, not just holding) but my old
converter was way too limp in the wrist (main
reason I ditched it).
Definitely will need to adjust the transmission
control settings to get it working the way you
want.
I would overcool the hell out of it because any
TCC slip at high load makes hellacious heat, way
worse than an unlocked converter's slippage (the
fluid carries away the fluid-slip heat as it's made,
but heat between two frictions has nothing to
help it escape; bad news).
Many converters, though, can hit better than 97%
efficient at the top end (by slip RPM calcs) and it
might not be so bad to forget the lockup and just
get a high efficiency, low-mid stall speed (like the
little TCI 3000 I took out, that one was over 97%
by 5000RPM). So maybe you'd need to shed 15HP
worth of heat, that's doable with a big-*** cooler
and dedicated fans I bet.
ultimate speed. Going to dmaller diameter converters
generally means you give up clutch capability (area).
Many, many performance converters have lockup
clutches that are not capable of holding at WOT.
If you're serious then you need to go for a brute
of a lockup clutch, either multi-disc or a high
area one. Mine's done OK with WOT lockup (even
pulls in at WOT, not just holding) but my old
converter was way too limp in the wrist (main
reason I ditched it).
Definitely will need to adjust the transmission
control settings to get it working the way you
want.
I would overcool the hell out of it because any
TCC slip at high load makes hellacious heat, way
worse than an unlocked converter's slippage (the
fluid carries away the fluid-slip heat as it's made,
but heat between two frictions has nothing to
help it escape; bad news).
Many converters, though, can hit better than 97%
efficient at the top end (by slip RPM calcs) and it
might not be so bad to forget the lockup and just
get a high efficiency, low-mid stall speed (like the
little TCI 3000 I took out, that one was over 97%
by 5000RPM). So maybe you'd need to shed 15HP
worth of heat, that's doable with a big-*** cooler
and dedicated fans I bet.
yes, it is possible to achieve 200 mph on a 4l65e, i had a yank 3200 and 3.23 gears with 17 inch rims 275/40/17 tires nitrogen inflated, you will be around 6100 rpms, i stopped at 6500..i mean...i didn't go 200 mph....
Thread Starter
TECH Regular
Joined: Jun 2008
Posts: 476
Likes: 0
Mass makes a difference to acceleration but not to
ultimate speed. Going to dmaller diameter converters
generally means you give up clutch capability (area).
Many, many performance converters have lockup
clutches that are not capable of holding at WOT.
If you're serious then you need to go for a brute
of a lockup clutch, either multi-disc or a high
area one. Mine's done OK with WOT lockup (even
pulls in at WOT, not just holding) but my old
converter was way too limp in the wrist (main
reason I ditched it).
Definitely will need to adjust the transmission
control settings to get it working the way you
want.
I would overcool the hell out of it because any
TCC slip at high load makes hellacious heat, way
worse than an unlocked converter's slippage (the
fluid carries away the fluid-slip heat as it's made,
but heat between two frictions has nothing to
help it escape; bad news).
Many converters, though, can hit better than 97%
efficient at the top end (by slip RPM calcs) and it
might not be so bad to forget the lockup and just
get a high efficiency, low-mid stall speed (like the
little TCI 3000 I took out, that one was over 97%
by 5000RPM). So maybe you'd need to shed 15HP
worth of heat, that's doable with a big-*** cooler
and dedicated fans I bet.
ultimate speed. Going to dmaller diameter converters
generally means you give up clutch capability (area).
Many, many performance converters have lockup
clutches that are not capable of holding at WOT.
If you're serious then you need to go for a brute
of a lockup clutch, either multi-disc or a high
area one. Mine's done OK with WOT lockup (even
pulls in at WOT, not just holding) but my old
converter was way too limp in the wrist (main
reason I ditched it).
Definitely will need to adjust the transmission
control settings to get it working the way you
want.
I would overcool the hell out of it because any
TCC slip at high load makes hellacious heat, way
worse than an unlocked converter's slippage (the
fluid carries away the fluid-slip heat as it's made,
but heat between two frictions has nothing to
help it escape; bad news).
Many converters, though, can hit better than 97%
efficient at the top end (by slip RPM calcs) and it
might not be so bad to forget the lockup and just
get a high efficiency, low-mid stall speed (like the
little TCI 3000 I took out, that one was over 97%
by 5000RPM). So maybe you'd need to shed 15HP
worth of heat, that's doable with a big-*** cooler
and dedicated fans I bet.
Sounds good, that was one of the only big missing pieces to the puzzle I had.
I found a lot of really good stuff on corvetteforum.
The obvious safety equipment (roll cage, fuel cell, harnesses) is required, as well as downforce.
Also, apparently a major issue at high speed is windows popping out (open them slightly) and wind pressure building up under the hood (heat extractor hood will solve this.
Now I need to get in touch with redline and see if they can hook me up.
They might even help me find a car to buy.
Launching!
Joined: Mar 2007
Posts: 250
Likes: 1
From: SoCal
so going WOT in 4th gear OD will fry the tranny?
i have a 4L65 in my car and always heard the gear shifts are where the tranny breaks. like when you are at WOT and the tranny has to downshift or upshift and its under full load.
i always figured that as long as ur in OD and a high enough MPH where the the converter would lock and you would be fine.
and i wanted to do 180mph in my 4L65
i have a 4L65 in my car and always heard the gear shifts are where the tranny breaks. like when you are at WOT and the tranny has to downshift or upshift and its under full load.
i always figured that as long as ur in OD and a high enough MPH where the the converter would lock and you would be fine.
and i wanted to do 180mph in my 4L65
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Yes this can be done.We just had a roadster go 206.5 using FTI Trans and converter at bonneville during speed weeks in 2008 with a stock big block chevy and a 700r-4.We run the billet lock up 10" converter.We locked it up in 2nd gear.The car weighs 2100 lbs. Yours is obviously heavier but has more power!!
Thanks,
Greg
Thanks,
Greg
__________________
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet
Well letting the gears change at WOT wont hurt, Letting the gears change at WOT LOCKED might hurt big impact there,
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